850138 divided by 18 
We want to figure out the number of times 850138 can be divided by 18.

Step 1:
8 divided by 18 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 18

On to step 2:
18 goes into 85 4 times with a remainder of 13.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 72 from 85 and we're left with 13.
Include the next digit (0) from the dividend after 13, then repeat: 130 / 18

Moving on to step 3:
The number 18 fits into 130 7 times, leaving a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Deduct 126 from 130 and we're left with 4.
Include the next digit (1) from the dividend after 4, then repeat: 41 / 18

Step 4:
If we divide 41 by 18, we get 2 and a remainder of 5.
The next digit of our result is 2. 
Result so far: 472.0
Subtract 36 from 41 to get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 18

Advancing to step 5:
The number 18 fits into 53 2 times, leaving a remainder of 17.
Put 2 as the next digit of the answer. 
Result so far: 4722.0
If we take 36 away from 53, we end up with 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 18

On to step 6:
178 divided by 18 is 9 with a remainder of 16.
Use 9 as the next digit of our solution. 
Result so far: 47229.0
If we take 162 away from 178, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
When dividing 160 by 18, we get 8 with a remainder of 16.
The next digit of our result is 8. 
Result so far: 47229.8
Deduct 144 from 160 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 8:
If we divide 160 by 18, we get 8 and a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 47229.88
The remainder is 16 after subtracting 144 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 47229.88 with a remaining 0.016.